AP Biology Unit 6: Gene Expression and Regulation

Unit 6: Gene Expression and Regulation — Comprehensive Study Guide Unit 6 is the molecular engine of the course. Every phenotype in Units 5, 7, and 8 ultimately comes from the processes here: replication preserves information, transcription and translation express it, and regulation decides when and how much. Expect the densest FRQ on the exam to come from this unit, often asking you to integrate regulation with mutation or biotechnology. 💡 Exam Tip: When a question asks "explain why X phenotype results," your job is almost always to trace the effect back through: DNA → mRNA → protein → cellu…